Portable Milk Heater

ABSTRACT

The invention discloses a portable milk heater, and relates to the field of milk heaters. The portable milk heater comprises a milk heater shell, a side cover, a milk container shell, a holder shell and a heating plate, wherein a milk heater cover is disposed on a top surface of the milk heater shell, a switch button is fixedly connected to a front surface of the milk heater shell, a charging port is fixedly connected to a back surface of the milk heater shell, a milk container is disposed in the milk heater cover, and the heating plate is disposed between the milk heater shell and the milk heater cover. The portable milk heater can effectively satisfy overall use requirements, can warm and heat milk timely, has more powerful functions, can be used anytime anywhere, is cleaner and more sanitary during the milk heating process, can carry out hermetic milk heating effectively, and can improve the overall heating efficiency and complete milk heating quickly during the whole milk heating process.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation-in-part application of U.S. patent application Ser. No. 17/848,207, filed on Jun. 23, 2022, the contents of which are hereby incorporated by reference.

TECHNICAL FIELD

The invention relates to the field of milk heaters, in particular to a portable milk heater.

BACKGROUND

Infants have a high requirement for the temperature of drinking milk and water due to their weak constitution, and milk heaters can easily satisfy this requirement by warming or heating milk or fruit juices to make the temperature of the milk or fruit juices suitable for infants. The milk heaters with heat insulation and heating functions are also suitable for the elderly. Before using a milk heater, users should clean a feeding bottle, a nipple and other accessories to ensure that the milk heater is cleaner and can fulfill an ideal effect. Then, a feeding bottle holder is horizontally placed in a temperature controlled mug; next, the feeding bottle and the nipple are placed in the feeding bottle holder; and then, milk is heated. When the milk heater is used, water is added into the temperature controlled mug, then the feeding bottle containing breast milk or other food is placed in the feeding bottle holder, and then, heating is started.

However, traditional milk heaters are inconvenient to use, and milk needs to be directly placed in the temperature controlled mug to be heated, which cannot realize continuous heating effectively due to the heat loss of the temperature controlled mug; moreover, the traditional milk heaters cannot be carried easily during use, cannot heat milk effectively in some outdoor environments, cannot satisfy overall use requirements effectively, cannot warm and heat milk timely, are not powerful enough in function, cannot be effectively used anytime anywhere, are not clean and sanitary enough, and cannot carry out hermetic milk heating effectively, which makes it impossible to improve the overall heating efficiency and complete quick milk heating effectively in the entire milk heating process.

Therefore, those skilled in the art provide a portable milk heater to solve the problems raised above.

SUMMARY

The objective of the invention is to provide a portable milk heater to solve the problems, raised in the description of related art, that traditional milk heaters are inconvenient to use, and milk needs to be directly placed in the temperature controlled mug to be heated, which cannot realize continuous heating effectively due to the heat loss of the temperature controlled mug; moreover, the traditional milk heaters cannot be carried easily during use, cannot heat milk effectively in some outdoor environments, cannot satisfy overall use requirements effectively, cannot warm and heat milk timely, are not powerful enough in function, cannot be effectively used anytime anywhere, are not clean and sanitary enough, and cannot carry out hermetic milk heating effectively, which makes it impossible to improve the overall heating efficiency and complete quick milk heating effectively in the entire milk heating process.

To fulfill the above objective, the invention provides the following technical solution:

A portable milk heater comprises a milk heater shell, a side cover, a milk container shell, a holder shell and a heating plate, wherein a milk heater cover is disposed on a top surface of the milk heater shell, a switch button is fixedly connected to a front surface of the milk heater shell, a charging port is fixedly connected to a back surface of the milk heater shell, a milk container is disposed in the milk heater cover, the heating plate is disposed between the milk heater shell and the milk heater cover, a battery holder is fixedly connected to a bottom surface of the heating plate through screws, a mounting plate is fixedly connected into the battery holder, a power-supply battery is disposed in the battery holder, a top surface of the side cover is sleeved with a top cover, the anti-slip recesses are formed in an outer wall of the top cover, an external thread is disposed in the side cover, side fixing blocks are disposed on an outer wall of the milk container shell, a storage box is disposed in the milk container shell, an internal thread is disposed on an inner wall of the milk container shell, the heating plate is located on a bottom surface of the milk container, locking studs are disposed on an outer wall of the holder shell, a circuit connecting plate A and a circuit connecting plate B are disposed on two sides of a top surface of the holder shell, a temperature display and a switch button connecting terminal are fixedly connected to one side of the circuit connecting plate A, a charging terminal is fixedly connected to one side of the circuit connecting plate B, mounting studs are disposed on the top surface of the holder shell, and a storage cavity is formed in an inner side of the switch button connecting terminal.

As a preferred embodiment of the invention, the charging port is electrically connected to the circuit connection plate B and the charging terminal through an electric wire, and the switch button is electrically connected to the circuit connecting plate A, the temperature display and the switch button connecting terminal through an electric wire.

As a preferred embodiment of the invention, two switch buttons and two circuit connecting plates A are arranged, the charging port, the charging terminal and the circuit connecting plate B are disposed on one side of the holder shell, and the switch buttons, the temperature display, the switch button connecting terminals and the circuit connecting plates A are disposed on the other side of the holder shell and are symmetric with the charging port, the charging terminal and the circuit connecting plate B.

As a preferred embodiment of the invention, the power-supply battery is electrically connected to the charging port, the charging terminal, the circuit connecting plate B, the switch button, the temperature display, the switch button connecting terminal, the circuit connecting plate A and the heating plate through electric wires.

As a preferred embodiment of the invention, the milk heater cover comprises the top cover, a plurality of anti-slip recesses, the side cover and the external thread, wherein the external thread is engaged with the internal thread, and the plurality of anti-slip recesses are regularly distributed on the periphery of a top surface of the top cover.

As a preferred embodiment of the invention, the milk container comprises the milk container shell, the internal thread, the storage box and a plurality of side fixing blocks, and the plurality of side fixing blocks are regularly distributed on the periphery of a top surface of the milk container shell.

As a preferred embodiment of the invention, the battery holder comprises the holder shell, the locking studs, the circuit connecting plate A, the temperature display, the storage cavity, the mounting studs, the circuit connecting plate B, the charging terminal and the switch button connecting terminal.

As a preferred embodiment of the invention, the center of gravity of the milk heater cover, the center of gravity of the milk container, the center of gravity of the power-supply battery, the center of gravity of the battery holder, the center of gravity of the mounting plate and the center of gravity of the heating plate are located on a same vertical axis.

The invention further provides an adapter for connecting a portable milk heater and a feeding bottle, wherein the portable milk heater has a heating opening, an internal thread is disposed on an inner wall of the heating opening, the feeding bottle has a bottle opening, an external thread is disposed on an outer wall of the bottle opening, and the adapter comprises a hollow main part; the hollow main part has a first end and a second end, and the first end extends to the second end and defines a flow path; wherein, an internal thread is disposed on an inner wall of the first end, an external thread is disposed on an outer wall of the second end, the first end is threadedly connected to the bottle opening and is configured to receive milk from the feeding bottle, and the second end is threadedly connected to the heating opening, such that a passage allowing the milk to enter the portable milk heater is provided to allow the milk to be heated by the portable milk heater.

The invention further provides a method for heating milk in a feeding bottle, comprising: providing a portable milk heater and an adapter, wherein the portable milk heater comprises a shell which defines a heating cavity and a heating opening for milk to flow in or out of the heating cavity, the adapter comprises a hollow main part, the hollow main part has a first end and a second end, and the first end extends to the second end and defines a flow path; taking down a nipple of the feeding bottle, and connecting a bottle opening of the feeding bottle and the first end of the adapter in a sealed manner; and connecting the heating opening of the portable milk heater and the second end of the adapter in a sealed manner to provide a passage for the milk to enter the portable milk heater, and filling the heating cavity with the milk, such that the milk is heated by the portable milk heater.

The invention further provides a portable milk heater, comprising a milk heater shell, a milk container, a holder shell and a heating plate, wherein a switch button is fixedly connected to a front surface of the milk heater shell, a charging port is fixedly connected to a back surface of the milk heater shell, the milk container comprises a milk container shell, side fixing blocks are disposed on an outer wall of the milk container shell, a storage box is disposed in the milk container shell, an internal thread is disposed on an inner wall of the milk container shell, the heating plate is disposed on a bottom surface of the milk container, a battery holder is fixedly connected to a bottom surface of the heating plate through screws, a mounting plate is fixedly connected into the battery holder, a power-supply battery is disposed in the battery holder, locking studs are disposed on an outer wall of the holder shell, a circuit connecting plate A and a circuit connecting plate B are disposed on two sides of a top surface of the holder shell respectively, a temperature display and a switch button connecting terminal are fixedly connected to one side of the circuit connecting plate A, a charging terminal is fixedly connected to one side of the circuit connecting plate B, mounting studs are disposed on the top surface of the holder shell, and a storage cavity is formed in an inner side of the switch button connecting terminal;

The portable milk heater further comprises an adapter, the adapter comprises a hollow main part, the hollow main part has a first end and a second end, the first end extends to the second end and defines a flow path, wherein, the first end is connected to a bottle opening of a feeding bottle and is configured to receive milk from the feeding bottle, and the second end is configured to be connected to the milk container to provide a passage for the milk to enter the storage box, such that the milk is heated by the portable milk heater.

Compared with the prior art, the invention has the following beneficial effects:

The portable milk heater can be used more conveniently, and milk does not need to be directly placed in a temperature controlled mug to be heated, such that the heat loss of the temperature controlled mug can be effectively avoided, continuous heating can be realized, and the overall heating efficiency is improved; the temperature display can display the temperature; and the milk heater can be carried easily during use, can be used for heating milk in some outdoor environments, can effectively satisfy overall use requirements during use, can warm and heat milk timely, has more powerful functions, can be used anytime anywhere, is cleaner and more sanitary during the milk heating process, can carry out hermetic milk heating effectively, and can improve the overall heating efficiency and complete milk heating quickly during the whole milk heating process.

BRIEF DESCRIPTION OF DRAWINGS

Other features, objectives and advantages of the invention will become more obvious by reading a detailed description of non-restrictive embodiments provided with reference to the following accompanying drawings:

FIG. 1 is an overall perspective structural view of the front side of a portable milk heater;

FIG. 2 is an overall perspective structural view of the back side of the portable milk heater;

FIG. 3 is a perspective structural view of a connecting part of a milk container of the portable milk heater;

FIG. 4 is an isometric side structural view of the connecting part of the milk container of the portable milk heater;

FIG. 5 is a perspective structural view of a milk heater shell of the portable milk heater;

FIG. 6 is a perspective structural view of a battery holder of the portable milk heater;

FIG. 7 is an isometric side structural view of the battery holder of the portable milk heater;

FIG. 8 is an exploded view of the invention;

FIG. 9 is another view of an adapter;

FIG. 10 is another view of the adapter;

FIG. 11 is another view of the adapter;

FIG. 12 is another view of the adapter;

FIG. 13 is another view of the adapter;

FIG. 14 is another view of the adapter.

In the figures: 1, milk heater shell; 2, switch button; 3, milk heater cover; 301, top cover; 302, anti-skip recess; 303, side cover; 304, external thread; 4, milk container; 401, milk container shell; 402, internal thread; 403, storage box; 404, side fixing block; 5, power-supply battery; 6, battery holder; 601, holder shell; 602, locking stud; 603, circuit connecting plate A; 604, temperature display; 605, storage cavity; 606, mounting stud; 607, circuit connecting plate B; 608, charging terminal; 609, switch button connecting terminal; 7, mounting plate; 8, heating plate; 9, charging port; 1000, portable milk heater; 1100, heating opening; 1110, inner wall; 1111, internal thread; 2000, feeding bottle; 2100, bottle opening; 2110, outer wall; 2111, external thread; 3000, adapter; 3100, hollow main part; 3110, first end; 3111, inner wall; 3112, internal thread; 3113, outer wall; 3114, lug; 3120, second end; 3121, outer wall; 3122, external thread; 3200, anti-slip line; 4000, sealing ring.

DESCRIPTION OF EMBODIMENTS

Referring to FIG. 1 -FIG. 7 , in one embodiment of the invention, a portable milk heater comprises a milk heater shell 1, a side cover 303, a milk container shell 401, a holder shell 601, and a heating plate 8, wherein a milk heater cover 3 is disposed on a top surface of the milk heater shell 1, switch buttons 2 are fixedly connected to a front surface of the milk heater shell 1, and a charging port 9 is fixedly connected to a back surface of the milk heater shell 1. The portable milk heater can be used more conveniently, and milk does not need to be directly placed in a temperature controlled mug to be heated, such that the heat loss of the temperature controlled mug can be effectively avoided, continuous heating can be realized, and the overall heating efficiency is improved; the milk heater shell 1 and the milk heater cover 3 are directly nested together, a milk container 4 is mounted in the milk heater cover 3, and anti-slip operation can be realized under the action of anti-slip recesses 302; the milk container 4 is disposed in the milk heater cover 3, the heating plate 8 is disposed between the milk heater shell 1 and the milk heater cover 3, a battery holder 6 is fixedly connected to a bottom surface of the heating plate 8 through screws, a mounting plate 7 is fixedly connected into the battery holder 6, a power-supply battery 5 is disposed in the battery holder 6, a top surface of the side cover 303 is sleeved with a top cover 301, the anti-slip recesses 302 are formed in an outer wall of the top cover 301, an external thread 304 is disposed in the side cover 303, side fixing blocks 404 are disposed on an outer wall of the milk container shell 401, a storage box 403 is disposed in the milk container shell 401, an internal thread 402 is disposed on an inner wall of the milk container shell 401, the heating plate 8 is located on a bottom surface of the milk container 4, locking studs 602 are disposed on an outer wall of the holder shell 601, circuit connecting plates A 603 and a circuit connecting plate B 607 are disposed on two sides of a top surface of the holder shell 601, and the milk container 4 and the milk heater cover 3 can be assembled fixedly under the action of the external thread 304 and the internal thread 402; milk to be heated is placed in the storage box 403 and heated by the heating plate 8 at the bottom, and then power is supplied to the charging port 9, a charging terminal 608, the circuit connecting plate B 607, the switch buttons 2, a temperature display 604, switch button connecting terminals 609, the circuit connecting plates A 603 and the heating plate 8 under the action of the power-supply battery 5, such that overall circuit connection is realized; the temperature display 604 and the switch button connecting terminals 609 are fixedly connected to one side of the circuit connecting plates A 603, the charging terminal 608 is fixedly connected to one side of the circuit connecting plate B 607, mounting studs 606 are disposed on the top surface of the holder shell 601, and a storage cavity 605 is formed in an inner side of the switch button connecting terminals 609.

Referring to FIG. 1 , FIG. 3 , FIG. 5 and FIG. 7 , the charging port 9 is electrically connected to the circuit connection plate B 607 and the charging terminal 608 through an electric wire, and the switch buttons 2 are electrically connected to the circuit connecting plates A 603, the temperature display 604 and the switch button connecting terminals 609 through electric wires. The number of the switch button connecting terminals 609 and the circuit connecting plates A 603 is two, the charging port 9, the charging terminal 608 and the circuit connecting plate B 607 are disposed on one side of the holder shell 601, and the switch buttons 2, the temperature display 604, the switch button connecting terminals 609 and the circuit connecting plates A 603 are disposed on the other side of the holder shell 601 and are symmetric with the charging port 9, the charging terminal 608 and the circuit connecting plate B 607. The entire milk heater can be turned on and off through the switch buttons 2; under the action of the charging terminal 608, charging can be realized; circuit control and connection between the circuit connecting plates A 603, the circuit connecting plate B 607, and the temperature display 604 are realized; the mounting plate 7 and the heating plate 8 can be fixedly connected to the battery holder 6 through the mounting studs 606 and the locking studs 602, and the milk heater can be carried easily and can be used for heating milk in some outdoor environments, and the power-supply battery 5 is electrically connected to the charging port 9, the charging terminal 608, the circuit connecting plate B 607, the switch buttons 2, the temperature display 604, the switch button connecting terminals 609, the circuit connecting plates A 603 and the heating plate 8 through electric wires. The milk heater cover 3 comprises the top cover 301, a plurality of anti-slip recesses 302, the side cover 303 and the external thread 304, wherein the external thread 304 is engaged with the internal thread 402, and the plurality of anti-slip recesses 302 are regularly distributed on the periphery of a top surface of the top cover 301. The milk container 4 comprises the milk container shell 401, the internal thread 402, the storage box 403 and a plurality of side fixing blocks 404, and the plurality of side fixing blocks 404 are regularly distributed on the periphery of a top surface of the milk container shell 401. During use, the milk heater can effectively satisfy overall use requirements, can warm and heat milk timely, has more powerful functions, can be used anytime anywhere, is cleaner and more sanitary during the milk heating process, can carry out hermetic milk heating effectively, and can improve the overall heating efficiency and complete milk heating quickly during the whole milk heating process. The battery holder 6 comprises the holder shell 601, the locking studs 602, the circuit connecting plates A 603, the temperature display 604, the storage cavity 605, the mounting studs 606, the circuit connecting plate B 607, the charging terminal 608 and the switch button connecting terminals 609. The center of gravity of the milk heater cover 3, the center of gravity of the milk container 4, the center of gravity of the power-supply battery 5, the center of gravity of the battery holder 6, the center of gravity of the mounting plate 7 and the center of gravity of the heating plate 8 are located on a same vertical axis.

It should be noted that the portable milk heater provided by the invention comprises the milk heater shell 1, the switch button 2, the milk heater cover 3, the top cover 301, the anti-slip recesses 302, the side cover 303, the external thread 304, the milk container 4, the milk container shell 401, the internal thread 402, the storage box 403, the side fixing blocks 404, the power-supply battery 5, the battery holder 6, the holder shell 601, the locking studs 602, the circuit connecting plates A 603, the temperature display 604, the storage cavity 605, the mounting studs 606, the circuit connecting plate B 607, the charging terminal 608, the switch button connecting terminals 609, the mounting plate 7, the heating plate 8 and the charging port 9, which are all universal standard parts or parts known by those skilled in the art, and the structure and principle of these parts can be obtained by those skilled in the art from technical manuals or through conventional experimental methods.

The working principle of the invention is as follows: the entire milk heater can be used more conveniently, and milk does not need to be directly placed in a temperature controlled mug to be heated, such that the heat loss of the temperature controlled mug can be effectively avoided, continuous heating can be realized, and the overall heating efficiency is improved; the milk heater shell 1 and the milk heater cover 3 are directly nested together, the milk container 4 is mounted in the milk heater cover 3, and anti-slip operation can be realized under the action of the anti-slip recesses 302; the milk container 4 and the milk heater cover 3 can be assembled fixedly under the action of the external thread 304 and the internal thread 402; milk to be heated is placed in the storage box 403 and heated by the heating plate 8 at the bottom, and then power is supplied to the charging port 9, the charging terminal 608, the circuit connecting plate B 607, the switch buttons 2, the temperature display 604, the switch button connecting terminals 609, the circuit connecting plates A 603 and the heating plate 8 under the action of the power-supply battery 5, such that overall circuit connection is realized; the entire milk heater can be turned on and off through the switch buttons 2; under the action of the charging terminal 608, charging can be realized; circuit control and connection between the circuit connecting plates A 603, the circuit connecting plate B 607, and the temperature display 604 are realized; the mounting plate 7 and the heating plate 8 can be fixedly connected to the battery holder 6 through the mounting studs 606 and the locking studs 602, and the temperature display 604 can display the temperature; and the milk heater can be carried easily, can be used for heating milk in some outdoor environments, can effectively satisfy overall use requirements during use, can warm and heat milk timely, has more powerful functions, can be used anytime anywhere, is cleaner and more sanitary during the milk heating process, can carry out hermetic milk heating effectively, and can improve the overall heating efficiency and complete milk heating quickly during the whole milk heating process.

In another embodiment of the invention, the invention further provides an adapter for connecting a portable milk heater and a feeding bottle. As shown in FIG. 8 , a portable milk heater 1000 has a heating opening 1100, a feeding bottle 2000 has a bottle opening 2100, and the adapter 3000 comprises a hollow main part 3100.

Specifically, as shown in FIG. 8 and FIG. 9 , an internal thread 1111 is disposed on an inner wall 1110 of the heating opening 1100, an external thread 2111 is disposed on an outer wall 2110 of the bottle opening 2100, the hollow main part 3100 has a first end 3110 and a second end 3120, and the first end 3110 extends to the second end 3120 and defines a flow path; wherein, an internal thread 3112 is disposed on an inner wall 3111 of the first end 3110, an external thread 3122 is disposed on an outer wall 3121 of the second end 3120, the first end 3110 is threadedly connected to the bottle opening 3100 and is configured to receive milk from the feeding bottle 2000, and the second end 3120 is threadedly connected to the heating opening 1100, such that a passage allowing the milk to enter the portable milk heater 1000 is provided to allow the milk to be heated by the portable milk heater 1000.

In this embodiment, the inner wall 3111 of the first end 3110 is cylindrical, the outer wall 3121 of the second end 3120 is cylindrical, the inner diameter of the first end 3110 is not less than the outer diameter of the bottle opening 2100, and the outer diameter of the second end 3120 is not greater than the inner diameter of the heating opening 1100, such that the first end 3110 and the second end 3120 can rotate more smoothly when the portable milk heater 1000 and the feeding bottle 2000 are connected, and the connection stability is better.

In some embodiments (not shown), the first end 3110 and the second end 3120 may be connected to the heating opening 1100 and the bottle opening 2100 in a buckled manner, a magnetic manner or other sealed manners, which can be selected by users according to actual use requirements.

In this embodiment, the diameter of the bottle opening 2100 is greater than that of the heating opening 1100, so the diameter of a first end 3110 of the adapter 3000 in this embodiment is greater than that of the second end 3120 (see FIG. 9 and FIG. 14 ). In some embodiments, when the diameter of the bottle opening 2100 is less than that of the heating opening 1100, the diameter of the first end 3110 of the adapter 3000 is less than that of the second end 3120 (see FIG. 10 and FIG. 12 ). In some embodiments, the diameter of the first end 3110 of the adapter 3000 may be the same as that of the second end 3120 (see FIG. 11 ). Users can set the diameter of the first end 3110 and the diameter of the second end 3120 according to actual use requirements.

To allow users to connect the portable milk heater and the feeding bottle through the adapter 3000 more conveniently, in this embodiment, as shown in FIG. 9 , the hollow main part 3100 further comprises anti-slip lines 3200 which are regularly distributed around the outer wall 3113 of the first end 3110, and the anti-slip lines 3200 can effectively prevent slipping when users rotate the adapter 3000, which may otherwise lead to instable connection. In some embodiments, the anti-slip lines 3200 may be protrusions, grooves, or other components with an anti-slip effect. In some embodiments (see FIG. 12 ), to fulfill an anti-slip effect, lugs 3114 may be disposed on the outer wall 3113 of the first end 3110, users can rotate the adapter 3000 through the lugs 3114 to fulfill an anti-slip effect, and operation is easier. FIG. 13 illustrates the adapter 3000 in another embodiment, and in this embodiment, the outer wall 3113 of the first end 3110 is designed to be in an irregular shape, such that slipping can also be effectively avoided during use.

FIG. 14 illustrates the view of another adapter 3000. In this embodiment, the adapter 3000 can adapt to a feeding bottle with a larger-diameter bottle opening. The portable milk heater 1000 provided by the invention may be provided with multiple adapters 3000 to adapt to threads on bottle openings 2100 of various feeding bottles 2000 on the market to satisfy use requirements of different users and provide more options for users.

To ensure that the portable milk heater 1000 and the feeding bottle 2000 can be connected more tightly through the adapter 3000 to avoid liquid leaking, the invention further provides a sealing ring 4000, which, as shown in FIG. 8 , is disposed at the first end 3110, the diameter of the sealing ring 4000 is not greater than the inner diameter of the first end 3110, the sealing ring 4000 has a central opening for providing a flow path for milk, and the sealing ring 4000 has a certain thickness and can effectively seal the portable milk heater 1000 and the feeding bottle 2000 after the portable milk heater 1000 and the feeding bottle 2000 are connected, to avoid liquid leaking.

The invention further provides a method for heating milk in a feeding bottle. As shown in FIG. 1 to FIG. 11 , the method comprises: providing a portable milk heater 1000 and an adapter 3000, wherein the portable milk heater 1000 comprises a shell 1200 which defines a heating cavity and a heating opening 1100 for milk to flow in or out of the heating cavity, the adapter 3000 comprises a hollow main part 3100, the hollow main part 3100 has a first end 3110 and a second end 3120, and the first end 3100 extends to the second end 3120 and defines a flow path; taking down a nipple of the feeding bottle 2000, and connecting a bottle opening 2100 of the feeding bottle 2000 and the first end 3110 of the adapter 3000 in a sealed manner; and connecting the heating opening 1100 of the portable milk heater 1000 and the second end 3120 of the adapter 3000 in a sealed manner to provide a passage for the milk to enter the portable milk heater 1000, and filling the heating cavity with the milk, such that the milk is heated by the portable milk heater 1000.

According to the method, a heating plate 8 is disposed in the heating cavity, and heat is transmitted into the milk through the heating plate 8, such that the loss of heat during the transmission process is minimized, heat is used to the maximum extent, and heating efficiency is greatly improved.

According to the method, a timer may be arranged in the portable milk heater 1000 to calculate the heating time, and when the heating time exceeds a preset heating time, a heating power supply is turned off to reduce power consumption, and the temperature of milk can be prevented from exceeding a temperature desired by users. In addition, a temperature probe may be arranged to measure the temperature of milk, and when the temperature of the milk exceeds a preset threshold, the heating power supply is turned off to effectively reduce power consumption, such that the portable milk heater can provide warm milk required by users.

In other embodiments of the invention, to further satisfy actual use requirements of users, a stirring mechanism may be arranged in the heating cavity, and when users brew milk powder, the milk powder can be stirred by the stirring mechanism to be fully dissolved. Correspondingly, in case where the portable milk heater 1000 provided with the stirring mechanism, a driving assembly of the portable milk heater 1000 may further comprise a motor, a gear, a belt or other drive mechanisms; or, a motor directly drives a stirring component of the stirring mechanism to rotate.

In some embodiments, to enrich charging options of users, wiring charging may be adopted, specifically by adding a magnet and an induction coil. By adopting wireless charging, the number of other components of the portable milk heater 1000 can be reduced, and a charging failure caused by missing of a charging wire is avoided.

In some other embodiments, a wireless control module may be additionally arranged on a control circuit, the wireless control module may comprise various control models, and users may be connected to the portable milk heater 1000 through a mobile phone, and control heating work of the milk heater by writing various programs. In some embodiments, the portable milk heater 1000 can realize smart milk heating, users may preset multiple temperatures, a temperature sensor is inlaid in a heating module, and when the temperature of milk reaches a preset temperature, the portable milk heater stops heating automatically and buzzes to remind users, such that the portable milk heater does not need to be attended.

The above embodiments are merely preferred and specific ones of the invention, and the protection scope of the invention is not limited to the above embodiments. Equivalent substitutions or modifications made by any skilled in the art within the technical scope of the invention according to the technical solutions and inventive concepts of the invention should fall within the protection scope of the invention. 

What is claimed is:
 1. An adapter for connecting a portable milk heater and a feeding bottle, wherein the portable milk heater has a heating opening, an internal thread is disposed on an inner wall of the heating opening, the feeding bottle has a bottle opening, an external thread is disposed on an outer wall of the bottle opening, and the adapter comprises a hollow main part; the hollow main part has a first end and a second end, the first end extends to the second end and defines a flow path, wherein, an internal thread is disposed on an inner wall of the first end, an external thread is disposed on an outer wall of the second end, the first end is threadedly connected to the bottle opening and is configured to receive milk from the feeding bottle, and the second end is threadedly connected to the heating opening, such that a passage for the milk to enter the portable milk heater is provided to allow the milk to be heated by the portable milk heater.
 2. The adapter according to claim 1, wherein the inner wall of the first end is cylindrical, the outer wall of the second end is cylindrical, an inner diameter of the first end is not less than an outer diameter of the bottle opening, and an outer diameter of the second end is not greater than an inner diameter of the heating opening.
 3. The adapter according to claim 2, wherein the hollow main part further comprises anti-slip lines, and the anti-slip lines are regularly distributed around an outer wall of the first end.
 4. The adapter according to claim 2, wherein a sealing ring is disposed at the first end, and a diameter of the sealing ring is not greater than the inner diameter of the first end.
 5. A method for heating milk in a feeding bottle, comprising: providing a portable milk heater and an adapter; wherein, the portable milk heater comprises a milk heater shell, which defines a heating cavity and a heating opening for milk to flow into or out of the heating cavity; the adapter comprises a hollow main part, the hollow main part has a first end and a second end, and the first end extends to the second end and defines a flow path; taking down a nipple of the feeding bottle, and connecting a bottle opening of the feeding bottle and the first end of the adapter in a sealed manner; and connecting the heating opening of the portable milk heater and the second end of the adapter in a sealed manner to provide a passage for the milk to enter the portable milk heater, and filling the heating cavity with the milk, such that the milk is heated by the portable milk heater.
 6. The method according to claim 5, wherein a heating plate is disposed in the heating cavity, and heat is transmitted into the milk into the milk through the heating plate.
 7. The method according to claim 6, wherein a heating power supply is turned off when an actual heating time exceeds a preset heating time.
 8. The method according to claim 6, wherein a heating power supply is turned off when a temperature exceeds a preset threshold.
 9. A portable milk heater, comprising a milk heater shell, a milk container, a holder shell and a heating plate, wherein a switch button is fixedly connected to a front surface of the milk heater shell, a charging port is fixedly connected to a back surface of the milk heater shell, the milk container comprises a milk container shell, side fixing blocks are disposed on an outer wall of the milk container shell, a storage box is disposed in the milk container shell, an internal thread is disposed on an inner wall of the milk container shell, the heating plate is disposed on a bottom surface of the milk container, a battery holder is fixedly connected to a bottom surface of the heating plate through screws, a mounting plate is fixedly connected into the battery holder, a power-supply battery is disposed in the battery holder, locking studs are disposed on an outer wall of the holder shell, a circuit connecting plate A and a circuit connecting plate B are disposed on two sides of a top surface of the holder shell respectively, a temperature display and a switch button connecting terminal are fixedly connected to a side of the circuit connecting plate A, a charging terminal is fixedly connected to a side of the circuit connecting plate B, mounting studs are disposed on the top surface of the holder shell, and a storage cavity is formed in an inner side of the switch button connecting terminal; the portable milk heater further comprises an adapter, the adapter comprises a hollow main part, the hollow main part has a first end and a second end, the first end extends to the second end and defines a flow path, wherein, the first end is connected to a bottle opening of a feeding bottle and is configured to receive milk from the feeding bottle, and the second end is configured to be connected to the milk container to provide a passage for the milk to enter the storage box, such that the milk is heated by the portable milk heater. 